Unhappy Customer

I went to Sheet Street Centurion on the 17th bought linen on a extra 20% off , I was short of pillow cases then the floor assistant check for me which branch I could get them. On Sunday the 19th went to The Grove Mall to buy the pillow cases was told the special was cancelled as per management , but the special was suppose to end 19th , Now I have sheets with no pillow cases.